I have been using a CZ-70 Pro for 3 years now and I really like it, although I have been wanting to get a second detector. I have always liked Whites, my first detector was a Di Pro back in '86. I loved it but it just so HEAVY! I've been researching the V3 for awhile and it really seems like a totally different machine than anything out there and cool. Just wondering how it would compare to my CZ and I'm wondering why it has only 3 tones verses the M6 which has 7. I realize it has far more information to offer the user, and I'm assuming that's the reason. Also how would it compare to the CZ in depth? Thanks!